Ceiling fan



MxM. GLASSER.

CEILING FAN. APPLICATION FILED SEPT. 28, I920.

' Patented Mar. 7, 1922.

2 SHEETS-SHEET ll/WENTOR A TTORNEYS M. M. GLASSER.

CEILING FAN.

APPLICATION FILED SEPT. 28, 1920.

1,409,090, Patented Mar. 7,1922.

2 SHEETS-SHEET 2.

INVENTOR A TTORNEYS UNITED STATES PATENT OFFICE.

MAURICE MORTDECAI GLASSER, 0F CHARLESTON, SOUTH CAROLINA.

To all whom it may concern:

Be it known that I, MAURICE M. GLASSER, a citizen of the United States, and a resident of Charleston, in the county of Charleston and State of South Carolina, have invented certain new and useful Improvements in Ceiling Fans, of which the followin is a specification. I

y invention is an improvement in coding fans, and has for its object to provide a fan of the character specified, wherein the blades in addition to their rotary'movement have a vertically swinging or oscillating movement imparted to them during their rotation, and controlled by their rotation, for distributing the current of air thrown by the blades over a larger area.

In the drawings:

Figure 1 is a side view of theimproved fan,

Figure 2 is a section on the line 22 of Fi re 1,

*igure 3 is a vertical section through the sleeve showing the reversing mechanism,

Figure 4 is a side view of another embodiment of the invention.

In the present embodiment of the invention shown in Figures 1 to 3 the improved fan comprises a suitable motor, as for instance an electrical motor which is arranged within a cylindrical casing 1. The said motor and easing are mounted to rotate on a shaft 2 which hasa base 3 adapted to be secured to a ceiling, so that the motor and casing depend vertically at the lower end of the shaft. The shaft 2 is hollow, and the lead wires for the electrical current may pass through the shaft to the motor.

In the present instance the fan has four blades 4, extending radially from the motor casing, and each blade is pivoted to the casing to swing on a horizontal axis. At the inner end of each blade there is secured a plate 5, having a pair of hinged lugs 6 at its inner end which fit on opposite sides of a lug 7 extending radially of a casing 1. The lugs 6 are pivotally connected to the lugs i', and means is provided for simultaneously swinging all of the blades vertically. The said means includes a sleeve 8 which is mounted to rotate on the shaft 2, and to reciprocate longitudinally thereof, and this sleeve has a pair of radially extending ears 9 at each blade. An arc shaped link 10 connects each pair of ears with the adjacent blade, the link Specification of Letters Patent.

CEILING FAN.

Patented Mar. 7, 1922.

Application filed September 28, 1920. Serial No. 413,307.

and

mechanism being in the form of right and left hand screw threads on the shaft, which are adapted to be engaged by nut sections 15 and 16. These nut sections are connected to the arms'of a yoke 17 which is pivoted at 18 within the sleeve, and at each end of the body of the yoke there is provided an eX- tension 19 having a recess in its end, into which is threaded a pin 20. These pins 20 are adapted to engage the collars 12 at the end of the travel of the sleeve in each direction to shift the yoke.

As indicated in Fig. 3, the sleeve 8 is moving downwardly and the pin 20 is just about to come in contact with the bottom collar 12. Now when the lower arm 19 carrying pin20 begins pressing against the bottom collar the dog 21 is permitted to swing the yoke 17 and cause the lower nut 16 to engage lower threaded portion of shaft 2 and at same time rocking the upper nut 15 out of engagement with the upper threaded portion of said shaft; the sleeve will commence to move slowly upward until the upper pin 20 be gins to contact with the upper collar 12, when the reverse operation takes place. Thus the movement of the sleeve will be reversed and this will occur whenever a pin 20 engages a collar 12. The pins may be adjusted, by turning them into or out of the recesses, to insure that the reversal will take place at the proper time.

Means is also provided for releasably holding the yoke in adjusted position. The said means is in the form of a catch pin 21. which is mounted to slide in a radial recess in a collar 22 connected to the sleeve as indicated at 23. This collar encircles the shaft loosely and moves with the sleeve. The head of the pin is triangular as shown, and engages a beveled catch lug 24 at the center of the yoke body. A coil spring 25 encircles the pin between the head and the bottom of the recess, and normally acts to press the pin outwardly. When the yoke is swung, the catch lug 24 will force the pin inwardly and it will pass the head of the pin. As soon as the lug has passed the head of the pin, the spring will force the pin outwardly.

The fan shown in Figure 1 has the rotatable member of the motor outside, and

there is no ditliculty in attaching the hinged lugs 7 to the rotating member. lhis is the Vsestinghouse type of fan, but in the Emerson type and the General Electric type, the rotating element is also almost totally en- 7 closed, and the blades must be fastened at the bottom. This type of fan as shown in Figure 4-. comprises a shaft 26 having the base 27 for connection with the ceiling and carrying'at its lower end the motor casing 28. The retatingmember of the motor is arranged within the casing, and the blades 29 are connected with the rotating element by means of the enrved links 30 and the hinge plates 31, the latter being secured to the blades .while the links are hinged to the hinge plates at their outer ends and rigidly connected to the rotatable member at their inner ends.

The links 32 which connect the sleeve 33 with the blades are pivoted at one end :to the sleeve, and at the other to the hinge plates. The sleeve is ot the same construction as the sleeve 8 having the reversing mechanism for engaging the upper collar 12. It will be understood thatthe mannerof attaching may be in accordance wlth the type of fan,'the invention consisting in profollows areacontinuously, never varying its travel.

Vi ith the improved tan however in moving fh'Olll the extreme downward position indi :cated in Figure ttothe extreme upward position, the blades willdrive a blast continuonsly increasing in area. On their down ward movement, the area will decrease, thus the direction of the blast delivered by each 'bladewill be cont-inuousl T changing swee v ing radially outwardly and nwardly.

rotatable ca radially from the casing. or a bin nested between each blade 1 claim: l. In combination with a tan eonn'uisu e and blades GX'i'SDJ' and for permitting the blades to sw versely of the plane of their rot bn. and

means controlled by the rotation of the blades for swinging said blades, a shaiit for supporting the casing and the blades, :1

. sleeve mounted to rotate on the shaft and 160 :tov reciprocate longitudinally thereof, a con- "IIGCtIOII between each blade and the sleeve for simultaneously swinging the-blades as the sleeve moves longitudinally of the shaft, and

tan is as a connection between the sleeves and the shaft for moving said sleeve longitudinally thereof in=opposite directions.

2. In combination with a fan'comprising a rotatable casing and blades extending radially -from the casing, of a hinge coning a hub and blades extending radially therefrom, said blades being hinged to the hub to swing transversely of the plane in which they rotate, and means controlled by the rotation otthe blades for simultaneously swinging the blades. V

4.. In combination, a ceiling fancomprising a rotatable element a support for thesaid element with which it .is rotatably connected, and blades extending radially therefrom, said blades being hinged -to:the element to swing transversely of the plane in which tation of the blades for simultaneously swinging the blades, said means comprising a sleeve mounted to move longitudinally of the support for the fan, 'aplural-ity of means supported by the sleeve and engag ing the fan support to constrain the sleeve to move longitudinally of the support 'and in opposite directions, means for engaging one of saidmeans and disengaging the other at each end'ot the travel otthe sleeve, and a connection between the sleeve and the bladeslor swinging said blades as the sleeve moves. r g g 5.. In combination, a ceiling "fan comprising a rotatable element and blades extending radially therefrom and hinged to the element to swing transversely of the plane in which they rotate. and means controlled ,by the rotation at the blades for swinging them. 6. A fan comprising rotatal'ile blades capable swinging movement. and means operable by the rotation of the blades for swinging the blades transversely of the axis of .rot atioi'l first in one direction and then the other. whereby the normal diffusion of sproduced by the blades durition is continuously increased or de- 7 area. 1 Y

7. An air agitating device. comprising means for creating a current of air oi a predetermined cross sectional area. and alter .nately oppositely :reciprocating means for continuously .and V alternately increasing and decreasingthecross sectional'arc ot the created current.-

MAURICE MOR'TDECAI icniss'im.

they rotate, and meanscontrolled by the ro- 

